This example displays a basic world map using the Natural Earth projection, with country boundaries rendered as white-outlined paths and a graticule grid overlaid. It loads GeoJSON data from the world-atlas package and processes it through topojson-client’s `feature` method. The visualization is built with React, D3’s `geoNaturalEarth1`, `geoPath`, and `geoGraticule` APIs, and uses a state-driven `setState` pattern to fetch and render the map asynchronously.